"It's difficult to imagine loving another child as much as you love your existing children," Seal writes. "Anyone who has a family will tell you this. Where will one find that extra love? If you love your existing children with all of your heart, how then can one possibly find more heart with which to love another?"

"On Friday, Oct. 9, 2009, at 7:46 p.m., the answer to this question came in the form of our fourth child and second daughter," he continues. "Lou Sulola Samuel was born, and from the moment she looked into both of our eyes, it was endless love at first sight. She is beautiful beyond words and we are happy that she chose us to watch her grow over the coming years."

Back in April, Seal announced the pregnancy during a concert at Radio City Music Hall – much to his wife's surprise.

"[The news] came out faster than I wanted it to," Klum, 36, said at the time. "My husband kind of surprised me and everybody at one of his concerts."